<template>
  <div class="">
    <div class="crumbs">
    </div>
    <div class="bigDiv">
      <el-tabs v-model="message">
        <el-tab-pane :label="`未读消息(${state.unread.length})`" name="first">
          <el-table :data="state.unread" :show-header="true" style="width: 90%" center>
            <el-table-column>
              <template #default="scope">
                <span class="message-title">{{scope.row.title}}</span>
              </template>
            </el-table-column>
            <el-table-column prop="date" width="180"></el-table-column>
            <el-table-column width="120">
              <template #default="scope">
                <el-button size="small" @click="handleRead(scope.$index)">标为已读</el-button>
              </template>
            </el-table-column>
          </el-table>
          <div class="handle-row">
            <el-button class="allReadBtn">全部标为已读</el-button>
          </div>
        </el-tab-pane>
        <el-tab-pane :label="`已读消息(${state.read.length})`" name="second">
          <template v-if="message === 'second'">
            <el-table :data="state.read" :show-header="false" style="width: 100%">
              <el-table-column>
                <template #default="scope">
                  <span class="message-title">{{scope.row.title}}</span>
                </template>
              </el-table-column>
              <el-table-column prop="date" width="150"></el-table-column>
              <el-table-column width="120">
                <template #default="scope">
                  <el-button type="danger" @click="handleDel(scope.$index)">删除</el-button>
                </template>
              </el-table-column>
            </el-table>
            <div class="handle-row">
              <el-button type="danger">删除全部</el-button>
            </div>
          </template>
        </el-tab-pane>
        <el-tab-pane :label="`回收站(${state.recycle.length})`" name="third">
          <template v-if="message === 'third'">
            <el-table :data="state.recycle" :show-header="false" style="width: 100%">
              <el-table-column>
                <template #default="scope">
                  <span class="message-title">{{scope.row.title}}</span>
                </template>
              </el-table-column>
              <el-table-column prop="date" width="150"></el-table-column>
              <el-table-column width="120">
                <template #default="scope">
                  <el-button @click="handleRestore(scope.$index)">还原</el-button>
                </template>
              </el-table-column>
            </el-table>
            <div class="handle-row">
              <el-button type="danger">清空回收站</el-button>
            </div>
          </template>
        </el-tab-pane>
      </el-tabs>
    </div>
  </div>
</template>

<script>
import { ref, reactive } from 'vue'
export default {
  name: 'tabs',
  setup () {
    const message = ref('first')
    const state = reactive({
      unread: [
        {
          date: '2023-07-11 20:00:00',
          title: '【系统通知】该系统将于今晚凌晨2点到5点进行升级维护'
        },
        {
          date: '2023-07-12 5:00:00',
          title: '【系统通知】系统更新维护内容'
        }
      ],
      read: [
        {
          date: '2023-07-09 20:00:00',
          title: '【系统通知】系统将于今晚凌晨2点到5点进行升级维护'
        }
      ],
      recycle: [
        {
          date: '2023-07-08 20:00:00',
          title: '【系统通知】系统将于今晚凌晨2点到5点进行升级维护'
        }
      ]
    })

    const handleRead = (index) => {
      const item = state.unread.splice(index, 1)
      console.log(item)
      state.read = item.concat(state.read)
    }
    const handleDel = (index) => {
      const item = state.read.splice(index, 1)
      state.recycle = item.concat(state.recycle)
    }
    const handleRestore = (index) => {
      const item = state.recycle.splice(index, 1)
      state.read = item.concat(state.read)
    }

    return {
      message,
      state,
      handleRead,
      handleDel,
      handleRestore
    }
  }
}
</script>

<style>
.message-title {
  cursor: pointer;
}
.handle-row {
  margin-top: 30px;
}
.bigDiv {
  position:center;
  margin-left: 20px;
}
.allReadBtn{
  color:#42b983
}
</style>
